Expert API Development AgencyAPI Development
We build production-grade APIs that scale to millions of requests. Fixed-price delivery with full code ownership in 8-12 weeks.
IRPR builds APIs for companies that need reliability and speed. We use Node.js (Express, Fastify), Python (FastAPI, Flask), Go, and GraphQL to handle 10K+ requests per second. Our APIs power fintech payments, healthcare data exchange, and ecommerce inventory systems.
Every project ships in 8-12 weeks with a fixed price of $80K-$200K. You get source code in your repo, CI/CD on GitHub Actions, Sentry error tracking, and Postman documentation. We comply with HIPAA, PCI-DSS, and SOC 2 out of the box.
CTOs hire us to offload API development without hiring a team. Product owners need a v1 API in 3 months for a funding demo. Engineering leads bring us in when their team lacks microservices or GraphQL experience. Founders use us to build the core API that their startup runs on.
Types of software we ship.
REST API development
Stateless, resource-oriented APIs using Express or FastAPI. Designed for mobile backends and third-party integrations.
GraphQL API development
Single endpoint with flexible queries using Apollo Server or Yoga. Reduces over-fetching for complex UIs and real-time apps.
Microservices API
Decoupled services communicating via gRPC or message queues. Built with Docker and Kubernetes for independent scaling.
Webhook integration API
Event-driven webhooks that deliver real-time data to Stripe, Shopify, or custom endpoints. Idempotency and retry logic included.
Third-party API integration
Connect your app to Salesforce, HubSpot, AWS, or Twilio. Handles rate limiting, authentication, and data mapping.
Internal API development
APIs for internal tools and services with role-based access control. Documented with Swagger and secured via OAuth 2.0.
Public API / Product API
Developer-facing APIs with usage plans, API keys, and rate limiting. Built with Kong or AWS API Gateway for monetization.
Data API / ETL pipeline
APIs that transform and serve data from databases, S3, or Kafka. Supports real-time streaming and batch processing with Apache Airflow.
We build for every business type.
SaaS platforms
Fintech companies
Healthcare organizations
Ecommerce businesses
Logistics and supply chain
What an expert API development agency ships for you
Every project comes with production-grade infrastructure and full code ownership.
IRPR builds APIs that handle real traffic from day one. We deploy on AWS ECS or Google Cloud Run with auto-scaling, load balancers, and health checks. Your API gets a custom domain, SSL certificate, and monitoring via Datadog or Prometheus.
You also get a Postman collection for testing, Swagger/OpenAPI docs for developers, and a deployment pipeline on GitHub Actions. Every endpoint is tested with Jest or PyTest before release.
Expert API development agency vs generic dev shops
Not all agencies build APIs the same way. Here is how IRPR differs.
Generic shops often quote weekly or monthly rates and build black-box code. They use random tech stacks and skip documentation. You end up with slow endpoints, no tests, and zero logging.
IRPR works from a fixed Roadmap created in week 2. We choose modern stacks (Fastify, FastAPI, Go) and write automated tests from day one. Every API endpoint has structured logging, error handling, and rate limiting. You own the code and deploy it yourself.
- Hourly billing with no cap
- Code hosted on their servers
- No OpenAPI or Swagger docs
- No load testing before launch
- No error monitoring setup
- One contact person (often unavailable)
- Fixed price from Roadmap (week 2)
- Source code in your GitHub repo
- Auto-generated OpenAPI spec
- Load tested with k6 to 10K req/s
- Sentry + Datadog monitoring
- Dedicated PM + senior engineers
How we build your API in 4 phases
Our Idea-Roadmap-Product-Release framework keeps every project on track.
We start with a 1-week Idea phase to understand your data, users, and integrations. Then comes a 1-week Roadmap where every endpoint, model, and contract is specified and priced. No surprises.
The Product phase lasts 6-10 weeks depending on scope. We build your API in sprints with daily commits and weekly demos. Release week includes load testing, documentation, and deployment to your cloud account.
What ships with every API project
We hand over a complete production system, not just code.
Every API project from IRPR ends with a working system deployed in your own cloud account. You can deploy updates without us. The code is yours, built to your standards.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions (build, test, deploy)
- OpenAPI 3.0 spec (auto-generated from code)
- Postman collection with 50+ pre-set requests
- Sentry error tracking with alerts
- Datadog or Prometheus metrics dashboard
- Load test script (k6) for 10K concurrent requests
- Environment configs for dev, staging, production
- API rate limiting (per key, per endpoint)
- One-year warranty on bugs found in production
What we ship in this practice.
Fintech payment processing API
Built a REST API that authorizes 20K transactions per minute. Reduced payment failure rate by 25%. Stack: Node.js, Express, PostgreSQL, Stripe Connect.
Healthcare data exchange API
Developed a FHIR-compliant API for patient records. Integrated with Epic and Cerner via HL7. Achieved HIPAA compliance and 99.99% uptime. Stack: FastAPI, FHIR, AWS HealthLake.
Ecommerce inventory sync API
Created a GraphQL API that syncs inventory across Shopify, Amazon, and a warehouse system. Cut manual reconciliation from 10 hours to 30 minutes per week. Stack: Apollo Server, MongoDB, Shopify REST API.
SaaS analytics platform API
Designed a public API for third-party developers to embed analytics dashboards. Handled 500+ API keys and 10M requests per day. Stack: Go, GraphQL, Redis, CockroachDB.
Real estate MLS data API
Built a caching layer for MLS data that serves 50K properties with sub-50ms response times. Replaced a legacy XML feed with a modern REST API. Stack: Python, Flask, PostgreSQL, Redis.
Logistics tracking API
Developed a webhook-based API that aggregates tracking data from 10 carriers (UPS, FedEx, DHL) and pushes updates to customers. Reduced support tickets by 40%. Stack: Node.js, Bull queue, MongoDB, Twilio SMS.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the total cost before we write a line of code.
Senior engineers only
Our team of 15 engineers averages 10+ years of experience. Each developer has shipped at least 5 production APIs. No juniors, no offshore interns.
Full code ownership
You own all source code and intellectual property from day one. We deploy to your cloud account. You can take the code to any internal team or another vendor.
8-12 week timeline
We deliver a production-ready API in 8-12 weeks. Our framework eliminates discovery delays. You get your API when you need it, not six months later.
Compliance by default
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs without extra charges. Encryption at rest, audit logs, and access controls are built in from the start.
Post-launch support
We include a one-year warranty on bugs found in production. Plus you get 30 days of post-launch monitoring and optimization at no extra cost.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.